Display device

Abstract

According to one embodiment, a display device includes an array substrate, a first cover member and a first adhesive layer. The array substrate includes first and second main surfaces and a first side surface. The first cover member includes third and fourth main surfaces and a second side surface. The first adhesive layer attaches the first and third main surfaces. The array substrate further includes a display area and a mounting area between the first side surface and the display area. The first cover member includes a protruding portion which protrudes relative to the first side surface.

What is claimed is: 
     
         1 . A display device comprising:
 an array substrate comprising a first main surface, a second main surface on a side opposite to the first main surface, and a first side surface connecting the first main surface and the second main surface to each other;   a transparent first cover member comprising a third main surface facing the first main surface, a fourth main surface on a side opposite to the third main surface, and a second side surface connecting the third main surface and the fourth main surface to each other; and   a first adhesive layer which attaches the first main surface and the third main surface to each other, wherein   the array substrate comprises a display area including a plurality of pixel electrodes, and a mounting area located between the first side surface and the display area as seen in plan view and including a terminal to which a drive signal of the array substrate is input, and   the first cover member comprises a protruding portion which protrudes relative to the first side surface.   
     
     
         2 . The display device of  claim 1 , further comprising:
 a counter-substrate comprising a fifth main surface facing the second main surface, a sixth main surface on a side opposite to the fifth main surface, and a third side surface connecting the fifth main surface and the sixth main surface to each other;   a sealing material which attaches the array substrate and the counter-substrate to each other; and   a liquid crystal layer which is sealed in between the array substrate and the counter-substrate by the sealing material, wherein   the mounting area is formed in a portion which protrudes relative to the third side surface in the array substrate.   
     
     
         3 . The display device of  claim 2 , further comprising:
 a transparent second cover member comprising a seventh main surface facing the sixth main surface, an eighth main surface on a side opposite to the seventh main surface, and a fourth side surface connecting the seventh main surface and the eighth main surface to each other; and   a second adhesive layer which attaches the sixth main surface and the seventh main surface to each other.   
     
     
         4 . The display device of  claim 3 , wherein
 the first cover member protrudes relative to the fourth side surface.   
     
     
         5 . The display device of  claim 3 , wherein
 a position of the third side surface is aligned with a position of the fourth side surface.   
     
     
         6 . The display device of  claim 3 , further comprising:
 a light source facing the fourth side surface; and   a light guide provided between the fourth side surface and the light source.   
     
     
         7 . The display device of  claim 6 , wherein
 the liquid crystal layer is a polymer dispersed liquid crystal layer which can switch between a transparent state for transmitting light and a scattered state for scattering light from the light source based on application of voltage.   
     
     
         8 . The display device of  claim 6 , further comprising:
 a frame which holds the light source and the light guide; and   an adhesive member which attaches the frame to the third main surface in the protruding portion.   
     
     
         9 . The display device of  claim 8 , wherein
 the adhesive member includes a base, and a pair of adhesive layers provided on both sides of the base, respectively.   
     
     
         10 . The display device of  claim 9 , wherein
 the base is a heat radiation sheet.   
     
     
         11 . The display device of  claim 8 , wherein
 the frame is in contact with the eighth main surface.   
     
     
         12 . The display device of  claim 8 , wherein
 the light guide is located between the frame and the mounting area.   
     
     
         13 . The display device of  claim 12 , further comprising a flexible printed circuit connected to the terminal, wherein
 the flexible printed circuit partly passes through a gap formed between the frame and the protruding portion.   
     
     
         14 . The display device of  claim 13 , wherein
 the gap is formed by the adhesive member.   
     
     
         15 . The display device of  claim 13 , further comprising:
 an integrated circuit provided in the mounting area; and   a heat radiation sheet attached to the flexible printed circuit and the integrated circuit.   
     
     
         16 . The display device of  claim 8 , comprising a plurality of flexible printed circuits connected to the mounting area, wherein
 the adhesive member is located between two adjacent flexible printed circuits of the plurality of flexible printed circuits.   
     
     
         17 . The display device of  claim 8 , wherein
 the frame comprises a first portion attached to the third main surface by the adhesive member, and a second portion which is in contact with the eighth main surface.   
     
     
         18 . The display device of  claim 17 , wherein
 the frame further comprises a rib located between the first portion and the second portion.   
     
     
         19 . The display device of  claim 18 , further comprising a light source substrate in which the light source is mounted, wherein
 the light source substrate is attached to the rib.   
     
     
         20 . The display device of  claim 3 , wherein
 a background on the second cover member side can be visually recognized from the first cover member side, and a background on the first cover member side can be visually recognized from the second cover member side.